Answer:
12 + Y = 20 _ _ 12+8=20
Step-by-step explanation:
Y represents a number
Y= 8
The mathletes needed $932.50 to attend a competition in Boston .the bus cost $550 and meals for the tournament costs $22.50 for each student. How many students were able to attend the tournament.?
Help me plzzz I’m bad at math
Answer:get smart kid
Step-by-step explanation:
A student has a container with a volume of 2.5 liters. She estimates the volume to be 2.7 liters. By
what percent is the student's estimate off?
Answer:
12 percent
Step-by-step explanation:
2.5 ÷ 100 = 0.025
2.8 - 2.5 = 0.3
0.3 ÷ 0.025 = 12
hope it helps! please mark me brainliest
Merry Christmas good day ✌️
Need Help with this....GRAPH
Answer:
first graph y=-4x-1
then shade in the lower region
Step-by-step explanation:
Find the dimensions of a rectangle divided into three equal rectangles of maximum area that has total perimeter (including the middle divider) of 120 feet.
Answer:
The dimensions of the rectangle with the maximum area are 15 feet by 30 feet
Step-by-step explanation:
Optimization
There is a rectangle of dimensions x and y as seen in the figure below.
The side of length y is divided into three equal parts to make three equal rectangles.
The area of the greater rectangle is:
A = xy
It has to be maximized given the condition that the total perimeter including the middle dividers is 120 feet.
The outer perimeter of the rectangle is 2x+2y. There are two additional lines with a length of x feet each. Thus, the total perimeter is:
P = 2x + 2y + 2x = 4x + 2y
It has to be equal to 120 feet:
4x + 2y = 120
Dividing by 2:
2x + y = 60
Solving for y:
y = 60 - 2x
Substituting into the area:
[tex]A = x(60 - 2x) = 60x - 2x^2[/tex]
[tex]A=60x - 2x^2[/tex]
Taking the first derivative:
A'=60 - 4x
Equating to 0:
60 - 4x = 0
Solving for x:
x = 60/4 = 15
Thus x = 15 feet
Since y = 60 - 2x = 60 - 30 = 30
Thus y = 30 feet
The dimensions of the rectangle with the maximum area are 15 feet by 30 feet.
9(a^2+1)^2- 4(b^2-1)^2
[tex]9( {a}^{2} + 1) {}^{2} - 4( {b}^{2} - 1) {}^{2} [/tex]
[tex] = 9( {a}^{4} + 1) - 4( {b}^{4} + 1)[/tex]
[tex] = {9a}^{4} + 9 - {4b}^{4} - 4[/tex]
[tex] = {9a}^{4} - {4b}^{4} + (9 - 4)[/tex]
[tex] = {9a}^{4} - {4b}^{4} + 5[/tex]
Write an equation for the graph below in terms of x
Answer:
Y = -x - 1
Step-by-step explanation:
Slope (rise / run) is -1 and the y-intercept is -1.
Hoep this helps. Pls give brainliest.
Equation for the graph below in terms of x is
[tex]y=-1x-1[/tex]
Given :
The graph of a line . we need to write equation for the line graph
'Equation of a line is in the form of [tex]y=mx+b[/tex]
where m is the slope and b is the y intercept
y intercept is the point where the graph crosses y axis
The graph crosses y axis at -1
so y intercept [tex]b=-1[/tex]
Now we find out slope . Lets pick two points from the graph
[tex](-1,0) and (0,-1)\\slope(m)=\frac{y_2-y_1}{x_2-x_1} =\frac{-1+0}{0+1}=-1[/tex]
slope m=-1 and b=-1
Substitute the slope and y intercept in y=mx+b
Equation for the graph below is
[tex]y=-1x-1[/tex]
Learn more : brainly.com/question/18228324
a which family uses about twice the amount of electricity per person than the other two families? Explain your reasoning.
i dont understandStep-by-step explanation:
Answer:
The Stiles family; the Melendez family uses 390 kWh per person, the Barton family uses 355 kWh per person, and the Stiles family uses 745 kWh per person.
Step-by-step explanation: im preety sure ¯\_(ツ)_/¯
Samuel is buying a package of socks with five pairs. The socks come in only black or white and are randomly packaged. What is the probability of having 3 pairs of white socks and 2 pairs of black socks in a package of five pairs of socks
Answer:
the probability of there being 3 pairs of white socks and 2 pairs of black socks is 1 out of 4
Step-by-step explanation:
i think sorry if its wrong! let me know if its wrong! :)
Casey bought a sandwich and a drink for $4.75. If she has $7.00 to spend, what is the most she can spend on dessert?
(PLEASE ANSWER!!!)
Answer:
Step-by-step explanation:
Total amount = 7.00
Amount spent = 4.75
Remaining = 7 - 4.75 = 2.25
The amount she can spend on dessert is 2.25
A. A cell phone regularly priced at $100 went on sale for
$79.
Answer:
21% off
Step-by-step explanation:
if the phone was regularly priced at 100 dollars and is now priced at 79 then that would discount the phone by $21 making the price drop at 21%
2 friends share 6 waffles equally
Answer:
its 3
Step-by-step explanation:
3+3=6
Answer:
Each of them will get 3 waffles.
Step-by-step explanation:
Find the distance between the two points in simplest radical form.
(1,0) and (-8,3)
Answer:
3√10Step-by-step explanation:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\(1,0)\quad\implies\quad x_1=1\,,\ \ y_1=0\\\\(-8,3)\quad\implies\quad x_2=-8\,,\ \ y_2=3\\\\d=\sqrt{(-8-1)^2+(3-0)^2}= \sqrt{(-9)^2+3^2}=\sqrt{81+9}\\\\d=\sqrt{90}=\sqrt{9\cdot10}=\sqrt9\cdot\sqrt{10}=3\sqrt{10}\approx9.49[/tex]
Can someone help me with this please
Answer:
The answer to your question is A.
simplify
4.8×10⁵+9.5×10⁵
Answer:
Scientific Notation:
1.43 ⋅ 10^6
Expanded Form:
1430000
Step-by-step explanation:
Hope this helps! have a safe and joyful holiday
Please convert these decimals into fractions! :)
1. 0.6 = ?/10
2. 0.24 = ?/100
3. 0.05 = ?/100
4. 0.6 = ?/100
5. 0.2 = ?/10
6. 0.7 = ?/10
7. 0.25 = ?/100
8. 0.75 = ?/4
9. 0.1 = ?/10
10. 0.12 = ?/100
11. 0.75 = ?/100
12. 0.01 = ?/100
13 0.32 = ?/100
14. 0.10 = ?/100
15. 0.5 = ?/2
16. 0.50 = ?/100
17. 0.9 = ?/ 10
18. 0.25 ?/ 4
Answer:
1. 6/10
2. 24/100
3. 5/100
4. 60/100
5. 2/10
6. 7/10
7. 25/100
8. 3/4
9. 1/10
10. 12/100
11. 75/100
12.1/100
13. 32/100
14. 10/100
15. 1/2
16. 50/100
17. 9/10
18. 1/4
Step-by-step explanation:
The best way to convert these into fractions is to multiply the decimal by what's in the denominator. Whatever number you get is what goes in the numerator.
1. For example, 0.6 x 10 = 6, hence the answer 6/10.
Even for ones like 8 where the decimal is 0.75, 0.75 x 4 = 3, which gives you 3/4.
Find the percent change from 15 to 75.
Answer: 400 percent
Step-by-step explanation: 15 is the old value and 75 is the new value. In this case, we have a positive change (increase) of 400 percent because the new value is greater than the old value.
Which operation is the SECOND Step to solve this equation?
-6+ 5v= -21
PLS HELP
Answer:
C. is the answer
Step-by-step explanation:
got it right on edge 2020
15x - 7
Thornwood Drive
Jim's
Holly Drive
Adam's
The distance from Jim's house to the intersection of Thornwood Drive and Holly Drive is given by the expression 15x - 7. The total
distance from Jim's house to Adam's house when traveled on Thornwood Drive and Holly Drive is given by the expression 23x - 2.
Find a single expression that represents the distance from Adam's house to the intersection of Thornwood Drive and Holly Drive.
A)
8x + 5
B)
8x - 9
38x + 5
D)
38x - 9
. A cyclist pedals his bike 6.5 km up a mountain road, which has a steady incline. By the time he has reached the top of the mountain, he has climbed 1.1 km vertically. Calculate the angle of elevation of the road.
Answer:
9.72°
Step-by-step explanation:
Step one
Given data
let the hypotenuse be the distance the cyclist traveled = 6.5km
and let the opposite be the height of the mountain = 1.1 km
Step two:
Applying SOH CAH TOA
sin ∅= opp/hyp
∅= sin-1 opp/hyp
∅= sin-1 1.1/6.5
∅= sin-1 0.169
∅= sin-1 0.169
∅=9.72°
Write an example of a Function {(___), (___), (___), (___)}
Answer:
1,2
2,4
3,6
8,16
Step-by-step explanation:
That will be your answer
What is the sum in simplest form?
4 1/2 and 1 3/5
Answer:
The answer is 6 1/10
Step-by-step explanation:
4 1/2 + 1 3/5
5
1/2 + 3/5
5/10 + 6/10 = 11/10
6 1/10
Answer:
The solution is 6 1/10 or 61/10
Step-by-step explanation:
[tex] \sf 4 \frac{1}{2} + 1 \frac{3}{5} \\ \\ = \sf \frac{9}{2} + \frac{8}{5} \\ \\ = \sf \frac{9(5) + 8(2)}{10} \\ \\ = \sf \frac{45 + 16}{10} \\ \\ = \sf \frac{61}{10} \\ \\ = \sf \: 6.1[/tex]
In the table below, we are given two annuity plans, A and B, and the amount invested into each plan every month. Given this information, determine which of the two investments is an ordinary annuity, and the amount invested over a 12 month period.
A 13-column table with 2 rows. Column 1 has entries A, B. Column 2 is labeled January with entries 100, blank. Column 3 is labeled February with entries 100, 100. Column 4 is labeled March with entries 100, 100. Column 5 is labeled April with entries 100, 100. Column 6 is labeled May with entries 100, 100. Column 7 is labeled June with entries 100, 100. Column 8 is labeled July with entries 100, 100. Column 9 is labeled August with entries 100, 100. Column 10 is labeled September with entries 100, 100. Column 11 is labeled October with entries 100, 100. Column 12 is labeled November with entries 100, 100. Column 13 is labeled December with entries blank, 100.
a.
Investment A is an ordinary annuity with an annual contribution of $1,100
b.
Investment A is an ordinary annuity with an annual contribution of $100
c.
Investment B is an ordinary annuity with an annual contribution of $1,100
d.
Investment B is an ordinary annuity with an annual contribution of $100
Answer:
A
Step-by-step explanation:
Based on the information given regarding the annuity, the correct option is C. Investment B is an ordinary annuity with an annual contribution of $1,100.
What is annuity?It should be noted that an annuity simply means a contract that's between an individual and an insurance company. It's a form of long term investment.
In this case, the investment that is an ordinary annuity, and the amount invested over a 12 month period will be Investment B with an annual contribution of $1,100.
Learn more about annuity on:
https://brainly.com/question/25792915
CHOICE
How much will your total bill come to if you can get
15% off a $120 purchase?
Answer:
$102
Step-by-step explanation:
$102 is your answer.
Step-by-step explanation:
Okay, so we know that in order to find this out we have to multiply. First, turn the percentage into a decimal, .15 . Then you're going to do .15 * 120.
.15 * 120 = 18.
Now, we have the cost of what will be taken away from the total bill. So , if $120 is the total bill, we will do $120 - 18 which will get us the answer of $102. So that's your answer! I hope this helps! Happy Holidays and stay safe! Best of luck on your work!
Use the value of the discriminant to determine the number and type of roots for the equation.
x^2 = 4x - 4
Answer:
d=0; discriminant equals zero
this means there is one real root for the equation
Step-by-step explanation:
the discriminant is d=b^2-4ac
so we can write our equation in the format to subsitute
ax^2+bx+c=0
x^2 = 4x - 4
so...
1x^2 - 4x + 4 = 0
so
a= 1
b=-4
c=4
now subsitute
d= b^2-4ac
d= -4^2-4(1)(4)
d=16-16
d=0
The discrimant equals zero.
when the discriminant equal zero we know that there is one real root for the equation.
hope this helped!
What is the sum?
8+(-12)
О-20
0-4
020
Answer: -4
Work: So, to get -4, we need to simplify the equation. If you see any equation with +(- that's subtraction. So, with the rule, this equation is basically 8-12, and that's -4.
Answer:
-4
Step-by-step explanation:
8+(-12)
= 8-12
12-8=4
the answer is -4
Write an expression that is equivalent to two over three (4x + 9). (5 points)
eight over three x + 6
eight over three x + 9
two over three x + 6
two over three x + 9
Answer:
eight over three x + 6
Step-by-step explanation:
eight over three x + 6
Answer:
A. eight over three x + 6
Step-by-step explanation:
8x+18/3=8x/3+18/3=8/3x+6
Correct answer Gets Brainliest
Find the value of x so that the ratios 9 : x and 15 : 40 are equivalent.
Answer:
x=24
Step-by-step explanation:
bc
Answer/Step-by-step explanation:
x = 24
9 ÷ 15 = 0.6
40 x 0.6 = 24
Check work:
9 x 0.6 = 15
24 x 0.6 = 40
Please help me ASAP!!will give you the brainliest
Answer:
y=1x-2
Step-by-step explanation:
it is parallel so the slope stays the same at 1, and it goes through the point (3, -2), so the y intercept is -2.
Can someone please help me solve G and F!!!!! Pleasee
Answer:
i think this is the answer
Step-by-step explanation:
g=36°
because it is parallel
f ° =90°-36°
=54°
